1. Contributions to the theory of logic programming;Apt;J. Assoc. Comp. Mach.,1982
2. Can programming be liberated from the von Neumann style? A functional style and its algebra of programs;Backus;Commun. ACM,1978
3. On the integration of logic programming and functional programming;Barbuti;IEEE Int. Symp. Logic Prog.,1984
4. Symbolic Logic and Mechanical Theorem proving;Chang,1973
5. A relational language for parallel programming;Clark;Proc. of the ACM conf. on functional programming languages and computer architecture,1981